<?php
/**
 * COciColumnSchema class file.
 *
 * @author Ricardo Grana <rickgrana@yahoo.com.br>
 * @link http://www.yiiframework.com/
 * @copyright Copyright &copy; 2008-2011 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * COciColumnSchema class describes the column meta data of a Oracle table.
 *
 * @author Ricardo Grana <rickgrana@yahoo.com.br>
 * @version $Id: COciColumnSchema.php 3204 2011-05-05 21:36:32Z alexander.makarow $
 * @package system.db.schema.oci
 * @since 1.0.5
 */
class COciColumnSchema extends CDbColumnSchema
{
    /**
     * Extracts the PHP type from DB type.
     * @param string $dbType DB type
     * @return string
     */
    protected function extractOraType($dbType){
        if(strpos($dbType,'FLOAT')!==false) return 'double';

        if (strpos($dbType,'NUMBER')!==false || strpos($dbType,'INTEGER')!==false)
        {
            if(strpos($dbType,'(') && preg_match('/\((.*)\)/',$dbType,$matches))
            {
                $values=explode(',',$matches[1]);
                if(isset($values[1]) and (((int)$values[1]) > 0))
                return 'double';
                else
                return 'integer';
            }
            else
            return 'double';
        }
        else
        return 'string';
    }

    /**
     * Extracts the PHP type from DB type.
     * @param string $dbType DB type
     */
    protected function extractType($dbType)
    {
        $this->type=$this->extractOraType($dbType);
    }

    /**
     * Extracts the default value for the column.
     * The value is typecasted to correct PHP type.
     * @param mixed $defaultValue the default value obtained from metadata
     */
    protected function extractDefault($defaultValue)
    {
        if(stripos($defaultValue,'timestamp')!==false)
        $this->defaultValue=null;
        else
        parent::extractDefault($defaultValue);
    }
}
